degesch: Lua: fix a resource leak

1 files changed, 6 insertions, 2 deletions

diff --git a/degesch.c b/degesch.c
index d88b3bd..a2a0d23 100644
--- a/degesch.c
+++ b/degesch.c
@@ -7638,16 +7638,20 @@ lua_plugin_call (struct lua_plugin *self,
 	int n_params, int n_results, struct error **e)
 {
 	lua_State *L = self->L;
-	lua_pushcfunction (L, lua_plugin_error_handler);
 
+	// We need to pop the error handler at the end
+	lua_pushcfunction (L, lua_plugin_error_handler);
 	int error_handler_idx = -n_params - 2;
 	lua_insert (L, error_handler_idx);
 
 	if (!lua_pcall (L, n_params, n_results, error_handler_idx))
+	{
+		lua_remove (L, -n_results - 1);
 		return true;
+	}
 
 	(void) lua_plugin_process_error (self, lua_tostring (L, -1), e);
-	lua_pop (L, 1);
+	lua_pop (L, 2);
 	return false;
 }